Stainless Steel Vacuum Bottle Type M350 Clear TW-351CL High cold retention performance due to vacuum insulation. The Type M series is named "Type M" because of its shape, which resembles a milk bottle. Utilizing the know-how we have cultivated in developing camping gear, we have created a bottle that is also useful in urban life. The stainless steel double-wall construction creates a vacuum inside, blocking the effects of outside air and providing excellent heat and cold retention. The Type M series is available in 350ml and a generous 500ml size. Durable stainless steel silver water bottle with a white cap. - Brand: snow peak - Material: Stainless steel - Color: Silver - Cap Color: White Thank you for viewing.